DMA stands for Direct Memory Access. It is a feature of computer systems that allows certain hardware devices, such as network cards, sound cards, or storage devices, to transfer data directly to and from the computer’s memory without involving the central processing unit (CPU). DMA enables more efficient data transfers and frees up the CPU to perform other tasks, improving overall system performance. It is particularly useful for high-speed data transfer operations and real-time applications.

DMA Requirements:

Two computers (while one PC is possible, it defeats the purpose unless developing DMA cheats)
Good firmware